Warmer water at 40C is:
Correct answer: D. Heaviest
- A. Lighter
- B. Highest
- C. Heavier
- D. Heaviest
Explanation
Water has the highest density at 4 degree C as the cage-like structure which forms when water freezes starts breaking. Volume decreases hence water becomes more dense or heavier.
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About Anomalous Behaviour of Water
Water expands when cooled below 4°C and when it freezes, giving liquid water its maximum density at 4°C. The explanation depends on hydrogen bonding and the open structure of ice, which makes ice less dense than water and allows it to float.
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